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Dimensions

5.9” / 150mm

2.8” 

71mm

3.2” / 80mm

Copyright © 2018 Lorex Corporation 

As our products are subject to continuous improvement, Lorex reserves the right 

to modify product design, specifications and prices, without notice and without 

incurring any obligation. E&OE. All rights reserved.

LBV8541X_LBV8543X_QSG_EN_R2

4K Ultra HD Active Deterrence 

Security Camera

•  4K Ultra HD Active Deterrence Security Camera

•  Mounting Kit*

•  BNC / Power Extension Cable*

•  Power Adapter**

• Read this guide carefully and keep it for future reference.

• Follow all instructions for safe use of the product and handle with care.

• Use the camera within given temperature, humidity and voltage levels noted in 

the camera’s specifications.

• Do not disassemble the camera.

• Do not point the camera directly towards the sun or a source of  

intense light.

• Use only the supplied regulated power supply provided with the product. Use of 

a non-regulated, non-conforming power supply can damage the product and void 

the warranty.

• Periodic cleaning may be required. Use a damp cloth only. Do not use any harsh, 

chemical-based cleaners.

• The supplied cable is rated for surface and in-wall mounting only. Cables for  

floor-to-floor installations are sold separately (CMR type). These and other cables 

are available at 

lorex.com

.

• Point the camera where there is the least amount of obstructions  

(i.e., tree branches).

• Install the camera where vandals cannot easily reach.

• Secure cabling so that it is not exposed or easily cut.

• This camera is rated for outdoor use. Installation in a sheltered location is 

recommended.

* Per camera in multi-camera packs.

** A multi-camera power adapter that provides power to multiple 

cameras or individual power adapters may be provided depending on 

product configuration.

• For a full list of compatible recorders, visit 

lorex.com/compatibility

• Not intended for submersion in water. Installation in a sheltered location 

recommended.

• This camera includes an Auto Mechanical IR Cut Filter. When the camera changes 

between Day/Night viewing modes, an audible clicking noise may be heard from 

the camera. This clicking is normal, and indicates that the camera filter is working.

Quick Start Guide

English Version 2.0

LBV8541X / LBV8543X SERIES 

Package Contents

ATTENTION: 

A REGULATED UL / CSA APPROVED power supply is REQUIRED for use with 

this camera (included).

 

Only the included power adapter can be used.

 

Use of 

a non-regulated, non-conforming power supply can damage this product and 

voids the warranty.

Safety Precautions

Installation Tips

Disclaimers

www.lorex.com

Connecting the Cameras

Changing the DVR to 4K Resolution

The output resolution of a Lorex HD DVR is set to 1080p as a default. To view 4K 

resolution on a 4K monitor, the output resolution must be changed using the DVR 

menu.

To change the output resolution through a Lorex HD DVR:

1.  Right-click on the Live View to access the Quick Menu.

2.  Click 

Main Menu

 and then click the Setting icon (

).

3.  Click 

Setting

 > 

Display

.

4.  Click the 

Display 

tab.

5.  In the 

Resolution

 drop-down menu, select 

3840 x 2160

.

6.  Click 

Apply

 to save and click 

OK

 to exit.

Problem

Solution

No picture / signal

• Only use the approved power supply and 4K 

extension cables provided with camera.

• Ensure that you have set the DVR to 4K output 

resolution. See ‘Changing DVR to 4K Resolution’ 

for details.

• The cameras are only compatible with certain Lorex 

HD DVRs. For the full list of compatible recorders, 

visit 

lorex.com/compatibility

• Ensure your TV or monitor is on the correct input 

channel. Common terms for input channels: INPUT, 

AV CHANNEL, LINE1, LINE2, AUX.

• Ensure your DVR is properly connected to your TV 

or monitor. 

• Ensure connections are properly connected.

• Ensure the camera power supply is plugged in.

• Ensure that you only use the included power cable.

Picture is too bright

• Ensure your camera isn’t pointed directly at a 

source of light (e.g., sun or spot light).

• Check the brightness settings of the DVR and 

monitor.

• Move your camera to a different location.

Picture is too dark

• Check the brightness and contrast settings of the 

DVR and monitor.

Night vision is not working

• Only use the approved power supply and 4K 

extension cables provided with camera.

• The night vision activates when light levels drop. 

The area may have too much light.

Picture is not clear

• Only use the approved power supply and 4K 

extension cables provided with camera.

• Check the camera lens for dirt, dust, spiderwebs. 

Clean the lens with a soft, clean cloth.

• Make sure that the cable run is within the 

limitations specified in the section ‘Cable Extension 

Options’.

Bright spot in video when 

viewing camera at night

• Night vision reflects when pointing a camera 

through a window. Move the camera to a different 

location.

The camera warning 

light is not switching on 

automatically

• Ensure that you have enabled and configured white 

light deterrence using a compatible DVR. See your 

DVR’s documentation for more information.

• Ensure the active areas and schedule for white 

light deterrence are set properly. The default 

schedule for the warning light is night times 

(between 5PM and 7AM).

The camera siren is not 

switching on automatically

• The camera siren cannot switch on automatically.  

You can control the camera siren manually using 

the Lorex Cloud app or a compatible DVR.

Troubleshooting

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